#include<iostream>
using namespace std;

class Date
{
public:
    Date(int year = 1, int month = 1, int day = 1)
        :_year(year)
        ,_month(month)
        ,_day(day)
    {}
    ~Date()
    {}
    Date(const Date& d)
    {
         
    }


private:
    int _year;
    int _month;
    int _day;
};

int main()
{

    return 0;
}
